🤔Well, we can go with the old fashion but regulated way as discussed in this case study:
EP Amino Acid Analysis 2.2.56, Method 1 - Post-Column with Ninhydrin Derivatization
or simply by HPAE-PAD with no derivatization:
Combined AAA with carbohydrates by HPAE-PAD method
Which one would you rather use & why?
A freely searchable collection of high resolution accurate mass spectra that can be accessed online, free of charge.